<s>
The	O
Invisible	B-Protocol
Internet	I-Protocol
Project	I-Protocol
(	O
I2P	B-Protocol
)	O
is	O
an	O
anonymous	O
network	B-Application
layer	I-Application
(	O
implemented	O
as	O
a	O
mix	B-Protocol
network	I-Protocol
)	O
that	O
allows	O
for	O
censorship-resistant	B-Application
,	O
peer-to-peer	O
communication	O
.	O
</s>
<s>
The	O
software	O
that	O
implements	O
this	O
layer	O
is	O
called	O
an	O
"	O
I2P	B-Protocol
router	B-Protocol
"	O
,	O
and	O
a	O
computer	O
running	O
I2P	B-Protocol
is	O
called	O
an	O
"	O
I2P	B-Protocol
node	B-Protocol
"	O
.	O
</s>
<s>
I2P	B-Protocol
is	O
free	B-Application
and	O
open	B-Application
sourced	I-Application
,	O
and	O
is	O
published	O
under	O
multiple	O
licenses	B-License
.	O
</s>
<s>
I2P	B-Protocol
is	O
beta	O
software	O
since	O
2003	O
,	O
when	O
it	O
started	O
as	O
a	O
fork	O
of	O
Freenet	B-Protocol
.	O
</s>
<s>
The	O
software	O
's	O
developers	O
emphasize	O
that	O
bugs	B-Error_Name
are	O
likely	O
to	O
occur	O
in	O
the	O
beta	O
version	O
and	O
that	O
peer	O
review	O
has	O
been	O
insufficient	O
to	O
date	O
.	O
</s>
<s>
However	O
,	O
they	O
believe	O
the	O
code	O
is	O
now	O
reasonably	O
stable	O
and	O
well-developed	O
,	O
and	O
more	O
exposure	O
can	O
help	O
the	O
development	O
of	O
I2P	B-Protocol
.	O
</s>
<s>
The	O
network	O
is	O
strictly	O
message-based	O
,	O
like	O
IP	B-Protocol
,	O
but	O
a	O
library	B-Library
is	O
available	O
to	O
allow	O
reliable	O
streaming	O
communication	O
on	O
top	O
of	O
it	O
(	O
similar	O
to	O
TCP	B-Protocol
,	O
although	O
from	O
version	O
0.6	O
,	O
a	O
new	O
UDP-based	O
SSU	O
transport	O
is	O
used	O
)	O
.	O
</s>
<s>
All	O
communication	O
is	O
end-to-end	O
encrypted	O
(	O
in	O
total	O
,	O
four	O
layers	O
of	O
encryption	O
are	O
used	O
when	O
sending	O
a	O
message	O
)	O
through	O
garlic	B-Protocol
routing	I-Protocol
,	O
and	O
even	O
the	O
end	B-Protocol
points	I-Protocol
(	O
"	O
destinations	O
"	O
)	O
are	O
cryptographic	O
identifiers	O
(	O
essentially	O
a	O
pair	O
of	O
public	B-Application
keys	I-Application
)	O
,	O
so	O
that	O
neither	O
senders	O
nor	O
recipients	O
of	O
messages	O
need	O
to	O
reveal	O
their	O
IP	B-Protocol
address	I-Protocol
to	O
the	O
other	O
side	O
or	O
to	O
third-party	O
observers	O
.	O
</s>
<s>
Although	O
many	O
developers	O
had	O
been	O
a	O
part	O
of	O
the	O
Invisible	O
IRC	B-Protocol
Project	O
(	O
IIP	O
)	O
and	O
Freenet	B-Protocol
communities	O
,	O
significant	O
differences	O
exist	O
between	O
their	O
designs	O
and	O
concepts	O
.	O
</s>
<s>
IIP	O
was	O
an	O
anonymous	O
centralized	O
IRC	B-Protocol
server	O
.	O
</s>
<s>
Freenet	B-Protocol
is	O
a	O
censorship-resistant	B-Application
distributed	O
data	O
store	O
.	O
</s>
<s>
I2P	B-Protocol
is	O
an	O
anonymous	O
peer-to-peer	O
distributed	O
communication	O
layer	O
designed	O
to	O
run	O
any	O
traditional	O
internet	O
service	O
(	O
e.g.	O
</s>
<s>
Usenet	B-Application
,	O
email	O
,	O
IRC	B-Protocol
,	O
file	O
sharing	O
,	O
Web	O
hosting	O
and	O
HTTP	B-Protocol
,	O
or	O
Telnet	B-Protocol
)	O
,	O
as	O
well	O
as	O
more	O
traditional	O
distributed	O
applications	O
(	O
e.g.	O
</s>
<s>
a	O
distributed	O
data	O
store	O
,	O
a	O
web	O
proxy	O
network	O
using	O
Squid	B-Protocol
,	O
or	O
DNS	B-Protocol
)	O
.	O
</s>
<s>
Many	O
developers	O
of	O
I2P	B-Protocol
are	O
known	O
only	O
under	O
pseudonyms	O
.	O
</s>
<s>
I2P	B-Protocol
uses	O
2048bit	O
ElGamal/AES256/SHA256	O
+Session	O
Tags	O
encryption	O
and	O
Ed25519	O
EdDSA/ECDSA	O
signatures	O
.	O
</s>
<s>
I2P	B-Protocol
has	O
had	O
a	O
stable	O
release	O
every	O
six	O
to	O
eight	O
weeks	O
.	O
</s>
<s>
Updates	O
are	O
distributed	O
via	O
I2P	B-Protocol
torrents	B-Protocol
and	O
are	O
signed	O
by	O
the	O
release	O
manager	O
(	O
generally	O
zzz	O
or	O
str4d	O
)	O
.	O
</s>
<s>
I2P	B-Protocol
Versions	O
Version	O
Release	O
date	O
Release	O
Notes	O
2014-02-08	O
Support	O
for	O
outproxy	O
plugins	O
,	O
improves	O
lease	O
set	O
lookup	O
security	O
,	O
and	O
reduces	O
memory	O
usage	O
.	O
</s>
<s>
2014-03-31	O
Support	O
for	O
ECDSA	O
and	O
updates	O
to	O
Jetty	B-Language
8	I-Language
.	O
</s>
<s>
2014-05-22	O
SusiMail	O
improvements	O
and	O
fixes	O
for	O
firewalled	O
router	B-Protocol
.	O
</s>
<s>
2014-09-20	O
Preliminary	O
support	O
for	O
Ed25519	O
EdDSA	B-Algorithm
signatures	O
.	O
</s>
<s>
2014-11-01	O
Add	O
support	O
for	O
stronger	O
Router	B-Protocol
Info	O
signatures	O
.	O
</s>
<s>
2014-11-30	O
Signed	O
news	O
,	O
ECDSA	O
tunnels	B-Protocol
by	O
default	O
.	O
</s>
<s>
2015-06-02	O
Important	O
bug	B-Error_Name
fixes	O
,	O
and	O
several	O
changes	O
to	O
increase	O
floodfill	O
capacity	O
in	O
the	O
network	O
.	O
</s>
<s>
2015-09-12	O
Fixes	O
for	O
I2PSnark	O
getting	O
stuck	O
before	O
completion	O
,	O
and	O
begins	O
the	O
migration	O
of	O
router	B-Protocol
infos	O
to	O
new	O
,	O
stronger	O
Ed25519	O
signatures	O
.	O
</s>
<s>
2016-01-27	O
A	O
new	O
version	O
of	O
SAM	O
(	O
v3.2	O
)	O
and	O
numerous	O
bug	B-Error_Name
fixes	O
and	O
efficiency	O
improvements	O
.	O
</s>
<s>
The	O
first	O
release	O
to	O
require	O
Java	B-Language
7	O
.	O
</s>
<s>
2016-03-22	O
A	O
new	O
version	O
of	O
SAM	O
(	O
v3.3	O
)	O
,	O
QR	O
codes	O
for	O
sharing	O
hidden	O
services	O
,	O
identicons	O
and	O
router	B-Protocol
families	O
.	O
</s>
<s>
2016-06-07	O
Major	O
upgrade	O
to	O
the	O
native	O
crypto	O
library	B-Library
,	O
a	O
new	O
addressbook	O
subscription	O
protocol	O
with	O
signatures	O
,	O
and	O
major	O
improvements	O
to	O
the	O
Debian/Ubuntu	O
packaging	O
.	O
</s>
<s>
Preliminary	O
fixes	O
for	O
Java	B-Language
9	O
.	O
</s>
<s>
We	O
now	O
pass	O
same-origin	O
Referrer	O
headers	O
through	O
the	O
HTTP	B-Protocol
proxy	O
.	O
</s>
<s>
There	O
are	O
more	O
fixes	O
for	O
Java	B-Language
9	O
,	O
although	O
we	O
do	O
not	O
yet	O
recommend	O
Java	B-Language
9	O
for	O
general	O
use	O
.	O
</s>
<s>
2017-05-03	O
Support	O
for	O
Debian	O
Stretch	O
and	O
Ubuntu	O
Zesty	O
,	O
upgraded	O
to	O
Jetty	B-Language
9	O
and	O
Tomcat	O
8	O
,	O
support	O
for	O
the	O
migration	O
of	O
old	O
DSA-SHA1	O
hidden	O
services	O
to	O
the	O
EdDSA	B-Algorithm
signature	O
type	O
.	O
</s>
<s>
2017-08-07	O
Refreshed	O
the	O
router	B-Protocol
console	O
to	O
improve	O
readability	O
,	O
improved	O
accessibility	O
and	O
cross-browser	O
support	O
,	O
and	O
general	O
tidying	O
up	O
.	O
</s>
<s>
2017-11-07	O
0.9.32	O
contains	O
a	O
number	O
of	O
fixes	O
in	O
the	O
router	B-Protocol
console	O
and	O
associated	O
webapps	B-Application
(	O
addressbook	O
,	O
i2psnark	O
,	O
and	O
susimail	O
)	O
.	O
</s>
<s>
We	O
have	O
also	O
changed	O
the	O
way	O
we	O
handle	O
configured	O
hostnames	O
for	O
published	O
router	B-Protocol
infos	O
,	O
to	O
eliminate	O
some	O
network	O
enumeration	O
attacks	O
via	O
DNS	B-Protocol
.	O
</s>
<s>
2018-01-30	O
0.9.33	O
contains	O
bug	B-Error_Name
fixes	O
for	O
i2psnark	O
,	O
i2ptunnel	O
,	O
streaming	O
,	O
and	O
SusiMail	O
.	O
</s>
<s>
2018-04-10	O
0.9.34	O
contains	O
bug	B-Error_Name
fixes	O
for	O
i2ptunnel	O
,	O
router	B-Protocol
console	O
,	O
SusiMail	O
,	O
routing	O
and	O
transport	O
along	O
with	O
Changes	O
to	O
SusiMail	O
and	O
UPnP	O
.	O
</s>
<s>
2018-06-26	O
0.9.35	O
adds	O
support	O
for	O
folders	O
in	O
SusiMail	O
,	O
and	O
a	O
new	O
SSL	O
Wizard	O
for	O
setting	O
up	O
HTTPS	B-Protocol
on	O
your	O
Hidden	O
Service	O
website	O
.	O
</s>
<s>
We	O
've	O
bundled	O
the	O
i2pcontrol	O
plugin	O
as	O
a	O
webapp	B-Application
to	O
support	O
development	O
of	O
RPC	O
applications	O
.	O
</s>
<s>
There	O
are	O
numerous	O
performance	O
improvements	O
and	O
bug	B-Error_Name
fixes	O
.	O
</s>
<s>
The	O
console	O
has	O
an	O
updated	O
I2P	B-Protocol
logo	O
and	O
several	O
new	O
icons	O
.	O
</s>
<s>
We	O
've	O
updated	O
the	O
Linux	B-Application
installer	O
.	O
</s>
<s>
2019-08-28	O
0.9.42	O
continues	O
the	O
work	O
to	O
make	O
I2P	B-Protocol
faster	O
and	O
more	O
reliable	O
.	O
</s>
<s>
It	O
includes	O
several	O
changes	O
to	O
speed	O
up	O
our	O
UDP	B-Protocol
transport	O
.	O
</s>
<s>
There	O
are	O
,	O
of	O
course	O
,	O
a	O
lot	O
of	O
bug	B-Error_Name
fixes	O
also	O
.	O
</s>
<s>
Several	O
IPv6	O
address	O
detection	O
issues	O
have	O
been	O
fixed	O
,	O
and	O
there	O
of	O
course	O
are	O
several	O
other	O
bug	B-Error_Name
fixes	O
.	O
</s>
<s>
2020-02-25	O
0.9.45	O
contains	O
bug	B-Error_Name
fixes	O
.	O
</s>
<s>
2020-08-24	O
0.9.47	O
enables	O
new	O
encryption	O
for	O
some	O
services	O
,	O
now	O
requires	O
Java	B-Language
8	O
and	O
Sybil	O
analysis	O
and	O
blocking	O
is	O
now	O
enabled	O
by	O
default	O
.	O
</s>
<s>
2021-02-17	O
0.9.49	O
improves	O
SSU	O
transport	O
and	O
begins	O
transition	O
to	O
X25519	O
encryption	O
for	O
routers	B-Protocol
.	O
</s>
<s>
2021-05-17	O
0.9.50	O
continues	O
transition	O
to	O
X25519	O
encryption	O
for	O
routers	B-Protocol
,	O
enables	O
DoH	B-Protocol
for	O
reseeding	O
and	O
improves	O
support	O
for	O
IPv6	O
.	O
</s>
<s>
2021-08-23	O
1.5.0	O
adds	O
short	O
tunnel	O
build	O
messages	O
,	O
continues	O
transition	O
to	O
X25519	O
encryption	O
for	O
routers	B-Protocol
and	O
improves	O
performance	O
.	O
</s>
<s>
2021-11-29	O
1.6.1	O
further	O
accelerates	O
transition	O
to	O
X25519	O
for	O
routers	B-Protocol
,	O
enables	O
short	O
tunnel	O
build	O
messages	O
and	O
improves	O
SSU	O
performance	O
.	O
</s>
<s>
On	O
the	O
website	O
it	O
states	O
,	O
that	O
"	O
funding	O
for	O
I2P	B-Protocol
comes	O
entirely	O
from	O
donations	O
"	O
.	O
</s>
<s>
These	O
should	O
instead	O
go	O
to	O
secondary	O
applications	O
or	O
be	O
spent	O
on	O
hiring	O
others	O
,	O
to	O
work	O
on	O
I2P	B-Protocol
.	O
</s>
<s>
Support	O
for	O
the	O
onboarding	O
for	O
I2P	B-Protocol
came	O
from	O
the	O
Open	O
Technology	O
Fund	O
.	O
</s>
<s>
In	O
contrast	O
to	O
The	O
Tor	B-Application
Project	I-Application
,	O
I2P	B-Protocol
has	O
"	O
not	O
the	O
financial	O
or	O
legal	O
infrastructure	O
to	O
support	O
a	O
network	O
of	O
exit	B-Application
nodes	I-Application
"	O
.	O
</s>
<s>
The	O
reseed	O
servers	O
,	O
a	O
sort	O
of	O
bootstrap	O
nodes	B-Protocol
,	O
which	O
connect	O
the	O
user	O
with	O
the	O
initial	O
set	O
of	O
peers	O
to	O
join	O
the	O
I2P-network	O
,	O
should	O
be	O
run	O
by	O
volunteers	O
.	O
</s>
<s>
Since	O
I2P	B-Protocol
is	O
an	O
anonymizing	O
network	B-Application
layer	I-Application
,	O
it	O
is	O
designed	O
so	O
other	O
software	O
can	O
use	O
it	O
for	O
anonymous	O
communication	O
.	O
</s>
<s>
As	O
such	O
,	O
there	O
are	O
a	O
variety	O
of	O
tools	O
currently	O
available	O
for	O
I2P	B-Protocol
or	O
in	O
development	O
.	O
</s>
<s>
The	O
I2P	B-Protocol
router	B-Protocol
is	O
controlled	O
through	O
the	O
router	B-Protocol
console	O
,	O
which	O
is	O
a	O
web	O
frontend	O
accessed	O
through	O
a	O
web	B-Application
browser	I-Application
.	O
</s>
<s>
I2PTunnel	O
is	O
an	O
application	O
embedded	O
into	O
I2P	B-Protocol
that	O
allows	O
arbitrary	O
TCP/IP	O
applications	O
to	O
communicate	O
over	O
I2P	B-Protocol
by	O
setting	O
up	O
"	O
tunnels	B-Protocol
"	O
which	O
can	O
be	O
accessed	O
by	O
connecting	O
to	O
pre-determined	O
ports	O
on	O
localhost	B-Protocol
.	O
</s>
<s>
SAM	O
(	O
Simple	O
Anonymous	O
Messaging	O
)	O
is	O
a	O
protocol	O
which	O
allows	O
a	O
client	O
application	O
written	O
in	O
any	O
programming	O
language	O
to	O
communicate	O
over	O
I2P	B-Protocol
,	O
by	O
using	O
a	O
socket-based	O
interface	O
to	O
the	O
I2P	B-Protocol
router	B-Protocol
.	O
</s>
<s>
Any	O
IRC	B-Protocol
client	O
made	O
for	O
the	O
Internet	B-Protocol
Relay	I-Protocol
Chat	I-Protocol
can	O
work	O
,	O
once	O
connected	O
to	O
the	O
I2P	B-Protocol
IRC	B-Protocol
server	O
(	O
on	O
localhost	B-Protocol
)	O
.	O
</s>
<s>
I2P	B-Protocol
have	O
the	O
option	O
to	O
create	O
tunnels	B-Protocol
that	O
are	O
specific	O
for	O
this	O
usage	O
,	O
where	O
certain	O
commands	O
that	O
could	O
de-anonymize	O
the	O
user	O
are	O
filtered	O
out	O
.	O
</s>
<s>
Several	O
programs	O
provide	O
BitTorrent	B-Protocol
functionality	O
for	O
use	O
within	O
the	O
I2P	B-Protocol
network	O
.	O
</s>
<s>
Users	O
cannot	O
connect	O
to	O
non-I2P	O
torrents	B-Protocol
or	O
peers	O
from	O
within	O
I2P	B-Protocol
,	O
nor	O
can	O
they	O
connect	O
to	O
I2P	B-Protocol
torrents	B-Protocol
or	O
peers	O
from	O
outside	O
I2P	B-Protocol
.	O
</s>
<s>
I2PSnark	O
,	O
included	O
in	O
the	O
I2P	B-Protocol
install	O
package	O
,	O
is	O
a	O
port	O
of	O
the	O
BitTorrent	B-Protocol
client	O
named	O
Snark	O
.	O
</s>
<s>
Vuze	B-Application
,	O
formerly	O
known	O
as	O
Azureus	B-Application
,	O
is	O
a	O
BitTorrent	B-Protocol
client	O
that	O
includes	O
a	O
plugin	O
for	O
I2P	B-Protocol
,	O
allowing	O
anonymous	O
swarming	O
through	O
this	O
network	O
.	O
</s>
<s>
I2P-BT	O
is	O
a	O
BitTorrent	B-Protocol
client	O
for	O
I2P	B-Protocol
that	O
allows	O
anonymous	O
swarming	O
for	O
file	O
sharing	O
.	O
</s>
<s>
This	O
client	O
is	O
a	O
modified	O
version	O
of	O
the	O
original	O
BitTorrent	B-Protocol
3.4.2	O
program	O
which	O
runs	O
on	O
MS	B-Application
Windows	I-Application
and	O
most	O
dialects	O
of	O
Unix	B-Application
in	O
a	O
GUI	O
and	O
command-line	O
environment	O
.	O
</s>
<s>
It	O
was	O
developed	O
by	O
the	O
individual	O
known	O
as	O
'	O
duck	O
 '	O
on	O
I2P	B-Protocol
in	O
cooperation	O
with	O
'	O
smeghead	O
 '	O
.	O
</s>
<s>
It	O
is	O
no	O
longer	O
being	O
actively	O
developed	O
;	O
however	O
,	O
there	O
is	O
a	O
small	O
effort	O
to	O
upgrade	O
the	O
I2P-BT	O
client	O
up	O
to	O
par	O
with	O
the	O
BitTorrent	B-Protocol
4.0	O
release	O
.	O
</s>
<s>
I2PRufus	O
is	O
an	O
I2P	B-Protocol
port	O
of	O
the	O
Rufus	O
BitTorrent	B-Protocol
client	O
.	O
</s>
<s>
Robert	B-Protocol
(	O
P2P	O
Software	O
)	O
is	O
the	O
most	O
actively	O
maintained	O
I2PRufus	O
fork	O
.	O
</s>
<s>
XD	O
is	O
a	O
standalone	O
BitTorrent	B-Protocol
client	O
written	O
in	O
Go	O
.	O
</s>
<s>
BiglyBT	O
is	O
a	O
bittorrent	B-Protocol
client	O
based	O
on	O
Vuze	B-Application
which	O
also	O
allows	O
the	O
use	O
of	O
i2p	B-Protocol
for	O
downloading/seeding	O
.	O
</s>
<s>
Two	O
Kad	O
network	O
clients	O
exist	O
for	O
the	O
I2P	B-Protocol
network	O
,	O
iMule	O
and	O
Nachtblitz	O
.	O
</s>
<s>
iMule	O
(	O
invisible	O
Mule	O
)	O
is	O
a	O
port	O
of	O
eMule	B-Protocol
for	O
I2P	B-Protocol
network	O
.	O
</s>
<s>
In	O
contrast	O
to	O
other	O
eDonkey	O
clients	O
,	O
iMule	O
only	O
uses	O
the	O
Kademlia	B-Operating_System
for	O
proceeding	O
to	O
connect	O
through	O
I2P	B-Protocol
network	O
,	O
so	O
no	O
servers	O
are	O
needed	O
.	O
</s>
<s>
I2Phex	O
is	O
a	O
port	O
of	O
the	O
popular	O
Gnutella	B-Protocol
client	O
Phex	B-Language
to	O
I2P	B-Protocol
.	O
</s>
<s>
Tahoe-LAFS	B-General_Concept
has	O
been	O
ported	O
to	O
I2P	B-Protocol
.	O
</s>
<s>
This	O
allows	O
for	O
files	O
to	O
be	O
anonymously	O
stored	O
in	O
Tahoe-LAFS	B-General_Concept
grids	O
.	O
</s>
<s>
MuWire	O
is	O
a	O
file-sharing	O
program	O
inspired	O
by	O
the	O
LimeWire	O
Gnutella	B-Protocol
client	O
that	O
works	O
atop	O
the	O
I2P	B-Protocol
network	O
.	O
</s>
<s>
Currently	O
,	O
Vuze	B-Application
and	O
BiglyBT	O
are	O
the	O
torrent	B-Protocol
clients	O
that	O
make	O
clearnet	O
(	O
connections	O
not	O
through	O
I2P	B-Protocol
)	O
torrents	B-Protocol
available	O
on	O
I2P	B-Protocol
and	O
vice	O
versa	O
.	O
</s>
<s>
Depending	O
on	O
the	O
client	O
settings	O
,	O
torrents	B-Protocol
from	O
the	O
internet	O
can	O
be	O
made	O
available	O
on	O
I2P	B-Protocol
(	O
via	O
announcements	O
to	O
I2P	B-Protocol
's	O
DHT	O
network	O
)	O
and	O
torrents	B-Protocol
from	O
I2P	B-Protocol
can	O
be	O
made	O
available	O
to	O
the	O
internet	O
.	O
</s>
<s>
For	O
this	O
reason	O
,	O
torrents	B-Protocol
previously	O
published	O
only	O
on	O
I2P	B-Protocol
can	O
be	O
made	O
available	O
to	O
the	O
entire	O
Internet	O
,	O
and	O
users	O
of	O
I2P	B-Protocol
can	O
often	O
download	O
popular	O
content	O
from	O
the	O
Internet	O
while	O
maintaining	O
the	O
anonymity	O
of	O
I2P	B-Protocol
.	O
</s>
<s>
I2P-Bote	O
(	O
GitHub	O
)	O
is	O
a	O
free	B-Application
,	O
fully	O
decentralized	B-Operating_System
and	O
distributed	O
anonymous	O
email	O
system	O
with	O
a	O
strong	O
focus	O
on	O
security	O
.	O
</s>
<s>
I2P-Bote	O
is	O
accessible	O
via	O
the	O
I2P	B-Protocol
web	B-Application
console	I-Application
interface	O
or	O
using	O
standard	O
email	O
protocols	O
(	O
i.e.	O
</s>
<s>
IMAP/SMTP	O
)	O
.	O
</s>
<s>
All	O
bote-mails	O
are	O
transparently	O
end-to-end	O
encrypted	O
and	O
signed	O
by	O
the	O
sender	O
's	O
private	B-Application
key	I-Application
,	O
thus	O
removing	O
the	O
need	O
for	O
PGP	B-Application
or	O
other	O
email	O
encryption	O
software	O
.	O
</s>
<s>
I2P-Bote	O
offers	O
additional	O
anonymity	O
by	O
allowing	O
for	O
the	O
use	O
of	O
mail	O
relays	O
with	O
variable	O
length	O
delays	O
.	O
</s>
<s>
Since	O
it	O
is	O
decentralized	B-Operating_System
,	O
there	O
is	O
no	O
centralized	O
email	O
server	O
that	O
could	O
correlate	O
different	O
email	O
identities	O
as	O
communicating	O
with	O
each	O
other	O
(	O
i.e.	O
</s>
<s>
Even	O
the	O
nodes	B-Protocol
relaying	O
the	O
mails	O
do	O
not	O
know	O
the	O
sender	O
,	O
and	O
apart	O
from	O
sender	O
and	O
receiver	O
,	O
only	O
the	O
end	O
of	O
the	O
high-latency	O
mail	O
route	O
and	O
the	O
storing	O
nodes	B-Protocol
will	O
know	O
to	O
whom	O
(	O
which	O
I2P-Bote	O
address	O
–	O
the	O
user	O
's	O
IP	B-Protocol
address	I-Protocol
is	O
still	O
hidden	O
by	O
I2P	B-Protocol
)	O
the	O
mail	O
is	O
destined	O
.	O
</s>
<s>
I2P-Bote	O
can	O
be	O
installed	O
as	O
an	O
I2P	B-Protocol
plugin	O
.	O
</s>
<s>
I2P	B-Protocol
also	O
has	O
a	O
free	B-Application
pseudonymous	O
e-mail	O
service	O
run	O
by	O
an	O
individual	O
called	O
Postman	O
.	O
</s>
<s>
Susimail	O
is	O
a	O
web-based	B-Application
email	O
client	O
intended	O
primarily	O
for	O
use	O
with	O
Postman	O
's	O
mail	O
servers	O
,	O
and	O
is	O
designed	O
with	O
security	O
and	O
anonymity	O
in	O
mind	O
.	O
</s>
<s>
Susimail	O
was	O
created	O
to	O
address	O
privacy	O
concerns	O
in	O
using	O
these	O
servers	O
directly	O
using	O
traditional	O
email	O
clients	O
,	O
such	O
as	O
leaking	O
the	O
user	O
's	O
hostname	O
while	O
communicating	O
with	O
the	O
SMTP	B-Protocol
server	I-Protocol
.	O
</s>
<s>
It	O
is	O
currently	O
included	O
in	O
the	O
default	O
I2P	B-Protocol
distribution	O
,	O
and	O
can	O
be	O
accessed	O
through	O
the	O
I2P	B-Protocol
router	B-Protocol
console	O
web	O
interface	O
.	O
</s>
<s>
Mail.i2p	O
can	O
contact	O
both	O
I2P	B-Protocol
email	O
users	O
and	O
public	O
internet	O
email	O
users	O
.	O
</s>
<s>
I2P-Messenger	O
is	O
a	O
simple	O
Qt-based	O
,	O
serverless	O
,	O
end-to-end-encrypted	O
instant	B-Application
messenger	I-Application
for	O
I2P	B-Protocol
.	O
</s>
<s>
As	O
it	O
is	O
serverless	O
,	O
it	O
can	O
make	O
use	O
of	O
I2P	B-Protocol
's	O
end-to-end	O
encryption	O
,	O
preventing	O
any	O
node	B-Protocol
between	O
two	O
parties	O
from	O
having	O
access	O
to	O
the	O
plain	O
text	O
.	O
</s>
<s>
I2P-Messenger	O
can	O
be	O
used	O
for	O
fully	O
anonymous	O
instant	O
communication	O
with	O
persons	O
the	O
user	O
does	O
n't	O
even	O
know	O
,	O
or	O
,	O
alternatively	O
,	O
to	O
communicate	O
securely	O
and	O
untraceably	O
with	O
friends	O
,	O
family	O
members	O
,	O
or	O
colleagues	O
.	O
</s>
<s>
In	O
addition	O
to	O
messaging	O
,	O
file	B-Protocol
transfer	I-Protocol
is	O
also	O
supported	O
.	O
</s>
<s>
Syndie	B-Language
is	O
a	O
content	O
distribution	O
application	O
,	O
suitable	O
for	O
blogs	O
,	O
newsgroups	B-Application
,	O
forums	B-Application
and	O
small	O
media	O
attachments	O
.	O
</s>
<s>
Syndie	B-Language
is	O
designed	O
for	O
network	B-General_Concept
resilience	I-General_Concept
.	O
</s>
<s>
It	O
supports	O
connections	O
to	O
I2P	B-Protocol
,	O
the	O
Tor	B-Application
network	I-Application
(	O
Syndie	B-Language
does	O
not	O
support	O
Socks	O
proxies	O
,	O
workaround	O
needed	O
for	O
Tor	B-Application
access	O
)	O
,	O
Freenet	B-Protocol
and	O
the	O
regular	O
internet	O
.	O
</s>
<s>
Content	O
is	O
spread	O
efficiently	O
using	O
a	O
Gossip	B-Operating_System
protocol	I-Operating_System
.	O
</s>
<s>
Aktie	O
is	O
an	O
anonymous	O
file	O
sharing	O
and	O
distributed	O
Web	O
of	O
trust	O
forums	B-Application
system	O
.	O
</s>
<s>
Aktie	O
can	O
connect	O
to	O
I2P	B-Protocol
with	O
its	O
internal	O
router	B-Protocol
or	O
use	O
an	O
external	O
router	B-Protocol
.	O
</s>
<s>
I2PBerry	O
is	O
a	O
Linux	B-Application
distribution	O
which	O
can	O
be	O
used	O
as	O
a	O
router	B-Protocol
to	O
encrypt	O
and	O
route	O
network	O
traffic	O
through	O
the	O
I2P	B-Protocol
network	O
.	O
</s>
<s>
i2pd	O
is	O
a	O
light-weight	O
I2P	B-Protocol
router	B-Protocol
written	O
in	O
C++	B-Language
,	O
stripping	O
the	O
excessive	O
applications	O
such	O
as	O
e-mail	O
,	O
torrents	B-Protocol
,	O
and	O
others	O
that	O
can	O
be	O
regarded	O
as	O
bloat	O
.	O
</s>
<s>
Kovri	O
is	O
an	O
I2P	B-Protocol
router	B-Protocol
written	O
in	O
C++	B-Language
.	O
</s>
<s>
Kovri	O
's	O
primary	O
purpose	O
is	O
to	O
integrate	O
with	O
the	O
cryptocurrency	O
Monero	B-Protocol
to	O
send	O
new	O
transaction	O
information	O
over	O
I2P	B-Protocol
,	O
making	O
it	O
much	O
more	O
difficult	O
to	O
find	O
which	O
node	B-Protocol
is	O
the	O
origin	O
of	O
a	O
transaction	O
request	O
.	O
</s>
<s>
Those	O
using	O
the	O
Kovri	O
router	B-Protocol
will	O
be	O
running	O
full	O
I2P	B-Protocol
routers	B-Protocol
that	O
contribute	O
to	O
the	O
I2P	B-Protocol
network	O
the	O
same	O
way	O
the	O
current	O
Java	B-Language
router	B-Protocol
does	O
.	O
</s>
<s>
This	O
project	O
is	O
expected	O
to	O
benefit	O
both	O
the	O
Monero	B-Protocol
and	O
I2P	B-Protocol
communities	O
,	O
since	O
it	O
will	O
allow	O
for	O
greater	O
privacy	O
in	O
Monero	B-Protocol
,	O
and	O
it	O
should	O
increase	O
the	O
number	O
of	O
nodes	B-Protocol
on	O
the	O
I2P	B-Protocol
network	O
.	O
</s>
<s>
The	O
Privacy	O
Solutions	O
project	O
,	O
a	O
new	O
organization	O
that	O
develops	O
and	O
maintains	O
I2P	B-Protocol
software	O
,	O
launched	O
several	O
new	O
development	O
efforts	O
designed	O
to	O
enhance	O
the	O
privacy	O
,	O
security	O
,	O
and	O
anonymity	O
for	O
users	O
,	O
based	O
on	O
I2P	B-Protocol
protocols	O
and	O
technology	O
.	O
</s>
<s>
The	O
Abscond	O
browser	B-Application
bundle	O
.	O
</s>
<s>
i2pd	O
,	O
an	O
alternate	O
implementation	O
of	O
I2P	B-Protocol
,	O
written	O
in	O
C++	B-Language
(	O
rather	O
than	O
Java	B-Language
)	O
.	O
</s>
<s>
The	O
"	O
BigBrother	O
"	O
I2P	B-Protocol
network	O
monitoring	O
project	O
.	O
</s>
<s>
Release	O
builds	O
of	O
an	O
I2P	B-Protocol
Router	B-Protocol
application	O
for	O
Android	B-Application
can	O
be	O
found	O
on	O
the	O
Google	B-Application
Play	I-Application
store	I-Application
under	O
The	O
Privacy	O
Solutions	O
Project	O
's	O
Google	B-Application
Play	I-Application
account	O
or	O
on	O
an	O
F-Droid	B-Application
repository	O
hosted	O
by	O
the	O
developers	O
.	O
</s>
<s>
Nightweb	O
is	O
an	O
Android	B-Application
application	I-Application
that	O
utilizes	O
I2P	B-Protocol
and	O
Bittorrent	B-Protocol
to	O
share	O
blog	O
posts	O
,	O
photos	O
,	O
and	O
other	O
similar	O
content	O
.	O
</s>
<s>
Some	O
cryptocurrencies	O
that	O
support	O
I2P	B-Protocol
are	O
listed	O
below	O
.	O
</s>
<s>
Eepsite	O
Eepsites	O
are	O
websites	O
that	O
are	O
hosted	O
anonymously	O
within	O
the	O
I2P	B-Protocol
network	O
.	O
</s>
<s>
Eepsite	O
names	O
end	O
in	O
.i2p	B-Protocol
,	O
such	O
as	O
ugha.i2p	O
or	O
forum.i2p	O
.	O
</s>
<s>
EepProxy	O
can	O
locate	O
these	O
sites	O
through	O
the	O
cryptographic	O
identifier	O
keys	O
stored	O
in	O
the	O
hosts.txt	B-Protocol
file	O
found	O
within	O
the	O
I2P	B-Protocol
program	O
directory	O
.	O
</s>
<s>
Typically	O
,	O
I2P	B-Protocol
is	O
required	O
to	O
access	O
these	O
eepsites	O
.	O
</s>
<s>
.i2p	B-Protocol
'	O
I2p	B-Protocol
 '	O
is	O
a	O
pseudo-top-level	O
domain	O
which	O
is	O
only	O
valid	O
within	O
the	O
I2P	B-Protocol
overlay	B-Architecture
network	I-Architecture
scope	O
.	O
</s>
<s>
.i2p	B-Protocol
names	B-Library
are	I-Library
resolved	I-Library
by	O
browsers	B-Application
by	O
submitting	O
requests	O
to	O
EepProxy	O
which	O
will	O
resolve	O
names	O
to	O
an	O
I2P	B-Protocol
peer	O
key	O
and	O
will	O
handle	O
data	O
transfers	O
over	O
the	O
I2P	B-Protocol
network	O
while	O
remaining	O
transparent	O
to	O
the	O
browser	B-Application
.	O
</s>
<s>
EepProxy	O
The	O
EepProxy	O
program	O
handles	O
all	O
communication	O
between	O
the	O
browser	B-Application
and	O
any	O
eepsite	O
.	O
</s>
<s>
It	O
functions	O
as	O
a	O
proxy	B-Application
server	I-Application
that	O
can	O
be	O
used	O
by	O
any	O
web	B-Application
browser	I-Application
.	O
</s>
<s>
Peers	O
,	O
I2P	B-Protocol
nodes	B-Protocol
Other	O
machines	O
using	O
I2P	B-Protocol
that	O
are	O
connected	O
to	O
user	O
's	O
machine	O
within	O
the	O
network	O
.	O
</s>
<s>
Each	O
machine	O
within	O
the	O
network	O
shares	O
the	O
routing	O
and	O
forwarding	O
of	O
encrypted	O
packets	B-Protocol
.	O
</s>
<s>
Tunnels	B-Protocol
Every	O
ten	O
minutes	O
,	O
a	O
connection	O
is	O
established	O
between	O
the	O
user	O
's	O
machine	O
and	O
another	O
peer	O
.	O
</s>
<s>
Data	O
to	O
and	O
from	O
the	O
user	O
,	O
along	O
with	O
the	O
data	O
for	O
other	O
peers	O
(	O
routed	O
through	O
the	O
user	O
's	O
machine	O
)	O
,	O
pass	O
through	O
these	O
tunnels	B-Protocol
and	O
are	O
forwarded	O
to	O
their	O
final	O
destination	O
(	O
may	O
include	O
more	O
jumps	B-Architecture
)	O
.	O
</s>
<s>
netDb	O
The	O
distributed	B-Operating_System
hash	I-Operating_System
table	I-Operating_System
(	O
DHT	O
)	O
database	O
based	O
on	O
the	O
Kademlia	B-Operating_System
algorithm	O
that	O
holds	O
information	O
on	O
I2P	B-Protocol
nodes	B-Protocol
and	O
I2P	B-Protocol
eepsites	O
.	O
</s>
<s>
This	O
database	O
is	O
split	O
up	O
among	O
routers	B-Protocol
known	O
as	O
"	O
floodfill	O
routers	B-Protocol
"	O
.	O
</s>
<s>
A	O
zero-day	O
vulnerability	O
was	O
discovered	O
for	O
I2P	B-Protocol
in	O
2014	O
,	O
and	O
was	O
exploited	O
to	O
de-anonymize	O
at	O
least	O
30,000	O
users	O
.	O
</s>
<s>
This	O
included	O
users	O
of	O
the	O
operating	O
system	O
Tails	B-Application
.	O
</s>
<s>
A	O
2017	O
study	O
examining	O
how	O
forensic	O
investigators	O
might	O
exploit	O
vulnerabilities	O
in	O
I2P	B-Protocol
software	O
to	O
gather	O
useful	O
evidence	O
indicated	O
that	O
a	O
seized	O
machine	O
which	O
had	O
been	O
running	O
I2P	B-Protocol
router	B-Protocol
software	O
may	O
hold	O
unencrypted	O
local	O
data	O
that	O
could	O
be	O
useful	O
to	O
law	O
enforcement	O
.	O
</s>
<s>
The	O
study	O
identified	O
a	O
"	O
trusted	O
"	O
I2P	B-Protocol
domain	B-Application
registrar	I-Application
(	O
"	O
NO.i2p	O
"	O
)	O
which	O
appeared	O
to	O
have	O
been	O
abandoned	O
by	O
its	O
administrator	O
,	O
and	O
which	O
the	O
study	O
identified	O
as	O
a	O
potential	O
target	O
for	O
law	O
enforcement	O
takeover	O
.	O
</s>
<s>
It	O
alternatively	O
suggested	O
waiting	O
for	O
NO.i2p	O
'	O
s	O
server	O
to	O
fail	O
,	O
only	O
to	O
social	O
engineer	O
the	O
I2P	B-Protocol
community	O
into	O
moving	O
to	O
a	O
phony	O
replacement	O
.	O
</s>
<s>
From	O
the	O
first	O
I2P	B-Protocol
convention	O
was	O
held	O
in	O
Toronto	O
,	O
Ontario	O
.	O
</s>
<s>
The	O
conference	O
featured	O
presentations	O
from	O
I2P	B-Protocol
developers	O
and	O
security	O
researchers	O
.	O
</s>
<s>
mainly	O
had	O
presentations	O
on	O
the	O
past	O
growth	O
of	O
the	O
I2P	B-Protocol
network	O
,	O
a	O
talk	O
on	O
what	O
happens	O
when	O
companies	O
sell	O
people	O
's	O
personal	O
information	O
,	O
and	O
a	O
round-table	O
discussion	O
on	O
general	O
privacy	O
and	O
security	O
topics	O
.	O
</s>
<s>
The	O
day	O
ended	O
with	O
a	O
CryptoParty	B-Application
,	O
which	O
helped	O
to	O
introduce	O
new	O
users	O
to	O
installing	O
I2P	B-Protocol
,	O
sending	O
secure	O
emails	O
with	O
I2P-Bote	O
,	O
and	O
using	O
I2P	B-Protocol
along	O
with	O
Vuze	B-Application
.	O
</s>
<s>
The	O
talks	O
focused	O
on	O
how	O
to	O
dissuade	O
bad-actors	O
from	O
using	O
the	O
network	O
,	O
how	O
I2P	B-Protocol
has	O
worked	O
computer	O
connection	O
limits	O
,	O
how	O
to	O
do	O
application	O
development	O
using	O
I2P	B-Protocol
,	O
and	O
the	O
development	O
of	O
the	O
Android	B-Application
version	O
.	O
</s>
